Question

3. Name the light sensitive cells on the retina that do not get activated in a dimly lit
Toom. State the main function of these cells. Name the colours to which these cells
are generally sensitive.
4. Vision is one of the wonderful gifts given to us by God. But most of the people
never take care of their eyes. Care of the eyes should be taken. Suggest some
methods for proper eye care? ( value based question)
5. A person finds difficult to read a book.
a) Write the two names of the defect of eye he is suffering from.
b) State the two likely causes of this defect.
c) How can this defect be corrected?
6. A child fees More comfortable watching TV, while sitting close to it than when he
sits far away from it.
a) Name the eye defect he is suffering from. b) State two causes of this defect.
c) Name the kind of lens needed to correct this defect.​

Answer 1

Answer:

These specialized cells are called photoreceptors. There are 2 types of photoreceptors in the retina: rods and cones. The rods are most sensitive to light and dark changes, shape and movement and contain only one type of light-sensitive pigment. Rods are not good for color vision.

Answer 2

Answer:

Step-by-step explanation:

Rods and cones, it uses for intensity of light and color of light